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USER MANUAL SWAN Cycle III version 40.72A

USER MANUAL SWAN Cycle III version 40.72A

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94 Appendix A<br />

URMS<br />

UBOT<br />

TMBOT<br />

LEAK<br />

TIME<br />

TSEC<br />

SETUP<br />

S yy = ρg ∫ ⌊n sin 2 θ + n − 1 2 ⌋Edσdθ<br />

and n is the group velocity over the phase velocity.<br />

Root-mean-square value (in m/s) of the orbital motion near the bottom<br />

U rms = √ < U 2 >.<br />

Root-mean-square value (in m/s) of the maxima of the orbital motion<br />

near the bottom U bot = √ 2U rms .<br />

Bottom wave period (in s) defined as the ratio of the bottom excursion<br />

amplitude to the bottom orbital velocity.<br />

Numerical loss of energy equal to c θ E(ω,θ) across boundaries θ 1 =[dir1]<br />

and θ 2 =[dir2] of a directional sector (see command CGRID).<br />

Full date-time string.<br />

Time in seconds with respect to a reference time (see command QUANTITY).<br />

The elevation of mean water level (relative to still water level) induced by<br />

the gradient of the radiation stresses of the waves.<br />

Cartesian convention The direction is the angle between the vector and the positive x−axis,<br />

measured counterclockwise. In other words: the direction where the<br />

waves are going to or where the wind is blowing to.<br />

Nautical convention The direction of the vector from geographic North measured<br />

clockwise. In other words: the direction where the waves are coming<br />

from or where the wind is blowing from.

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